The International Brigades were supplied with MN rifles - the Canadian Mac-Paps and the US Abraham Lincoln Brigades. Serious 20th century history here. Only one I've ever seen was one that a CGN member turned up.
Its my understanding that some of the rifles supplied by the Soviets were the foreign contract ones, not Russian made.
What I would love to find is a Ross IIIB with a Spanish history. Made in Canada, supplied to the UK, given to the Whites, captured by the Reds, sent to the Mac-Paps, taken by the Fascists, then surplused by Spain. THAT'S history.